It's right for you if...
You've set your sights on endurance racing, and want every lightweight and performance advantage. You're looking for an efficient yet trail-capable rig that's fast on flats, soaks up rough terrain, and keeps you going mile after brutal mile.
The tech you get
A full OCLV Mountain Carbon frame, top-of-the-line 120mm Fox Factory 34 Step-Cast Float fork with FIT4 damper, 115mm of rear travel with a Fox Factory Float shock, and a 1x12 SRAM XX1 Eagle drivetrain. Plus, wide carbon Bontrager Kovee Elite 30 wheels with a 108-tooth Rapid Drive hub for instant engagement, TwistLoc dual remote suspension lockout, Bontrager Line Elite Dropper, Bontrager Kovee Pro OCLV Carbon handlebars, and SRAM Level Ultimate brakes with carbon levers.
The final word
The Top Fuel 9.9 is built for speed and capability on any terrain, but its efficient, short-travel design excels in endurance events. An OCLV Mountain Carbon frame, top-of-the-line suspension, and carbon components come together for a nimble and insanely fun ride at any distance.
favorite_borderWhy you'll love it
- It’s the ultimate endurance race bike—light, capable, and trimmed with high-performance components
- Wider Kovee Pro 30 wheels provide better tire support so you can run lower pressure and get more traction
- TwistLoc simultaneously locks out front and rear shocks for climbs and sprints with the simple Grip Shift-like motion
- This short-travel trail bike gives you a suspension setup that’s capable in several MTB disciplines, and especially suited to endurance events
- Make it yours: it's fully customizable through Project One
"Racing blood, trail spirit"
"It's devilishly quick, accelerates in a way that makes it seem like my legs actually produce real power. It's stable, planted, and it tracks like it's supposed to. Endurance athletes will be able to remain seated over more terrain, saving precious energy over the long haul, while XC pinners will hook up better on steep technical climbs."Read more
"Super light and fast as hell"
"The new Top Fuel might not be a pure XC-race bike anymore, but it's still precise and very fast. Its new trail orientation makes it a great choice for a rider who wants a fast and light bike with most of the the efficiency of a cross-country race bike, but with bit more versatility and playfulness."Read more
You might also like
Will my bike have a curved top tube?
Smaller frames (S) have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. Larger frames (M and up) have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.
Complete Tubeless System
Tubeless Ready rims and tires make it easy to ditch the tubes so you get better traction, fewer flats, and less weight. You're ready to roll right out of the box with the included TLR rim strips, valves, and sealant.
TwistLoc Dual Remote Lockout
TwistLoc simultaneously locks out front and rear shocks with a simple Grip Shift-like motion; and it leaves room for a dropper post lever.
Control Freak Cable Management
The lightest, quietest, most versatile cable management system allows any combination of shift, brake, lockout, and dropper post lines to be routed through the frame for clean looks and the ultimate custom setup.
*spec applies to all sizes unless otherwise noted
|Frame||OCLV Mountain Carbon main frame & stays, tapered head tube, Knock Block, Control Freak internal routing, Carbon Armor, magnesium rocker link, Mino Link, ABP, Boost148, 115mm travel|
|Fork||Fox Factory 34 Step-Cast, Float EVOL air spring, FIT4 2-position damper, dual remote lockout, tapered steerer, 44mm offset, Kashima Coat, Boost110, 15mm Kabolt axle, 120mm travel|
|Shock||Fox Factory Float, 2-position DPS damper, Bontrager DropLock remote, Kashima Coat, 190x45mm|
|Front wheel||Bontrager Kovee Pro 30 carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle|
|Rear wheel||Bontrager Kovee Pro 30 carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, SRAM XD driver, Boost148, 12mm thru axle|
|Rear skewer||Bontrager Switch thru axle, removable lever|
|Tire||Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40''|
|Shifter||SRAM XX1 Eagle, 12 speed|
|Rear derailleur||SRAM XX1 Eagle|
SRAM XX1 Eagle Carbon, DUB, 32T alloy ring, Boost, carbon, 170mm length
M, M/L, L, XL
SRAM XX1 Eagle Carbon, DUB, 32T alloy ring, Boost, carbon, 175mm length
|Bottom bracket||SRAM DUB, 92mm, PressFit|
|Cassette||SRAM XG-1295 Eagle, 10-50, 12 speed|
|Chain||SRAM XX1 Eagle, 12 speed|
|Saddle||Bontrager Montrose Pro, 7x10mm carbon rails, 138mm width|
Bontrager Line Elite Dropper, 100mm travel, internal routing, 31.6mm, 340mm length
Bontrager Line Elite Dropper, 150mm travel, internal routing, 31.6mm, 440mm length
Bontrager Line Elite Dropper, 170mm travel, internal routing, 31.6mm, 480mm length
|Handlebar||Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width|
S, M, M/L
Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree, 60mm length
M, L, XL
Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree, 70mm length
M/L, L, XL
Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree, 80mm length
|Headset||Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom|
S, M, M/L, L, XL
SRAM Level Ultimate hydraulic disc, carbon levers, 180mm front rotor, 160mm rear rotor
S, M, M/L, L, XL
SRAM Level Ultimate hydraulic disc, carbon levers
S, M, M/L, L, XL
SRAM CenterLine, 6-bolt, round-edge, 160mm
S, M, M/L, L, XL
SRAM CenterLine, 6-bolt, round-edge, 180mm
- M - 11.11 kg / 24.49 lbs (with TLR sealant, no tubes)
- Weight limit
- This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).
Sizing & fit
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.
153.0 - 162.0 cm
5'0.2" - 5'3.8"
72.0 - 76.0 cm
28.3" - 29.9"
161.0 - 172.0 cm
5'3.4" - 5'7.7"
76.0 - 81.0 cm
29.9" - 31.9"
170.0 - 179.0 cm
5'6.9" - 5'10.5"
80.0 - 84.0 cm
31.5" - 33.1"
177.0 - 188.0 cm
5'9.7" - 6'2.0"
83.0 - 88.0 cm
32.7" - 34.6"
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
All measurements provided in cm unless otherwise noted.
|Frame size number||Frame size letter||Geometry position||A — Seat tube||B — Seat tube angle||Effective seat tube angle||C — Head tube length||D — Head angle||E — Effective top tube||F — Bottom bracket height||G — Bottom bracket drop||H — Chainstay length||I — Offset||J — Trail||K — Wheelbase||L — Standover||M — Frame reach||N — Frame stack|